Mark Threlfall
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Mark Threlfall   T3 Triathlon


United Kingdom



Sport Types

Triathlon, Running, Duathlon, IRONMAN, Swimming

Preferred Athlete Levels

Beginner, Intermediate, Advanced, Professional


Triathlon Coaching from ex-professional triathlete Mark Threlfall, now presenting on Global Triathlon Network (GTN).

I have over 10 years experience helping amateur and elite athletes achieve their goals, whilst balancing their training with busy lives. Finding the balance, and being consistent is key, which is why I design my training plans with a realistic approach.

I offer bespoke tailor-made coaching, as well as pre-designed and proven programmes.

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Mark was a professional triathlete, with a real passion for coaching. He is a qualified British Triathlon Level 2 Coach, and now found presenting for Global Triathlon Network.

Harry is a current professional triathlete, and also a British Triathlon Level 2 Coach.

Together we form T3 Triathlon, along with our close community of athletes. We run triathlon camps in the UK and abroad, and also have a T3 Triathlon Team with support from some of the best triathlon, cycling, and running brands.


1-on-1 Coaching, Consultations, Group Coaching, Local Coaching, Remote Coaching, Training Camps, Swim Analysis

Have a question? Contact me.

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United Kingdom